diff --git a/perl-CPAN-Inject.spec b/perl-CPAN-Inject.spec
index 8e7a1ac..efdb962 100644
--- a/perl-CPAN-Inject.spec
+++ b/perl-CPAN-Inject.spec
@@ -10,7 +10,15 @@ Patch0:         CPAN-Inject-1.14-Restore-working-directory-after-loading-CPAN-co
 # Expect en error if DNS does not work, bug #1138562, CPAN RT#98774
 Patch1:         CPAN-Inject-1.14-Expect-unknown-exception-while-loading-CPAN-configur.patch
 BuildArch:      noarch
+# Build
+BuildRequires:  coreutils
+BuildRequires:  findutils
+BuildRequires:  sed
+BuildRequires:  make
 BuildRequires:  perl-generators
+BuildRequires:  perl-interpreter
+BuildRequires:  perl(inc::Module::Install) >= 1.00
+# Runtime
 BuildRequires:  perl(CPAN) >= 1.36
 BuildRequires:  perl(CPAN::Checksums) >= 1.05
 BuildRequires:  perl(Cwd)
@@ -18,12 +26,14 @@ BuildRequires:  perl(File::Basename) >= 2.6
 BuildRequires:  perl(File::chmod) >= 0.30
 BuildRequires:  perl(File::Copy) >= 2.02
 BuildRequires:  perl(File::Path) >= 1.00
-BuildRequires:  perl(File::Remove) >= 0.34
 BuildRequires:  perl(File::Spec) >= 0.80
 BuildRequires:  perl(File::Spec::Functions)
 BuildRequires:  perl(File::stat) >= 1.00
-BuildRequires:  perl(inc::Module::Install)
 BuildRequires:  perl(Params::Util) >= 0.21
+BuildRequires:  perl(strict)
+BuildRequires:  perl(vars)
+# Tests
+BuildRequires:  perl(File::Remove) >= 0.34
 BuildRequires:  perl(Test::More) >= 0.42
 BuildRequires:  perl(Test::Script) >= 1.02
 Requires:       perl(CPAN) >= 1.36
@@ -39,6 +49,11 @@ Requires:       perl(File::chmod) >= 0.30
 Requires:       perl(Params::Util) >= 0.21
 Requires:       perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
 
+# Remove under-specified dependencies
+%global __requires_exclude %{?__requires_exclude:__requires_exclude|}^perl\\(CPAN::Checksums\\)\s*$
+%global __requires_exclude %__requires_exclude|^perl\\(File::(Basename|chmod|Copy|Path|Spec|stat|chmod)\\)\s*$
+%global __requires_exclude %__requires_exclude|^perl\\(Params::Util\\)\s*$
+
 %description
 Following the release of CPAN::Mini, the CPAN::Mini::Inject module was
 created to add additional distributions into a minicpan mirror.
@@ -54,12 +69,11 @@ sed -i -e '/^inc\// d' MANIFEST
 find -type f -exec chmod -x {} +
 
 %build
-perl Makefile.PL INSTALLDIRS=vendor
-make %{?_smp_mflags}
+perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 NO_PERLLOCAL=1
+%{make_build}
 
 %install
-make pure_install PERL_INSTALL_ROOT=$RPM_BUILD_ROOT
-find $RPM_BUILD_ROOT -type f -name .packlist -exec rm -f {} \;
+%{make_install}
 %{_fixperms} $RPM_BUILD_ROOT/*
 
 %check